资源简介

(共34张PPT)
1
外研版 七年级上
Unit 5
The power of plants
Understanding ideas
grammar
Warming-up
Enjoy a video and know more about plants!
Learning Objectives
By the end of this lesson, we will be able to:
read the words with /e / /a / / / correctly and use sentence patterns(“May/Could/Can I... ” “ Certainly./Sure./Go ahead.”) to ask for and give permission in a polite way.
2. use listening strategy to listen for numbers.
3. tell the culture and different uses of corn and some other plants.
单词讲解
corn silk [k n s lk] n.玉米须
corn n. 玉米
silk n. 丝绸；丝线
silk road 丝绸之路
silk dress (丝绸裙子)
silk scarf (丝巾)
单词讲解
health [helθ] n.健康(状况)
[派生词] healthy (形容词)“健康的”
unhealthy (形容词) “不健康的”
[常见搭配]keep healthy = keep fit = stay healthy “保持健康”
He is in good health. = He is healthy. 他很健康。
He is in bad healthy. = He is unhealthy. 他不健康。
例句：Eating vegetables is good for your health.
吃蔬菜对你的健康有好处。
单词讲解
rose [r z] n.玫瑰;蔷薇
复数形式：roses
常用搭配：
red rose (红玫瑰)
rose garden (玫瑰园)
wild rose (野玫瑰)
例句：He gave her a bouquet of red roses.
(他送给她一束红玫瑰。)
cotton [ k tn] n.棉花
单词讲解
常用搭配：
cotton fabric (棉布)
cotton shirt (棉衬衫)
cotton industry (棉花产业)
例句：The softness of cotton makes it comfortable to wear. (棉花的柔软使得它很舒适穿着。)
单词讲解
bamboo [ b m bu ] n.竹，竹子
复数形式：bamboos
常用搭配：
bamboo forest (竹林)
bamboo shoots (竹笋)
bamboo furniture (竹制家具)
例句：The panda was happily munching on bamboo. (熊猫正愉快地啃着竹子。)
What plants can you see in the pictures
corn
wheat
How do you usually eat them
rice
rice
wheat
corn
bread
taco
rice noodles
Match the food with the plants.
Rice, wheat and corn are the world's top three food plants. People around the world eat them in different ways.
For example, rice noodles in East Asia, bread in Europe and tacos in the Americas.
墨西哥卷饼(taco)是一种墨西哥食品。taco这个词的起源有多种解释，其中一种说法是, 它最早可追溯到18世纪的墨西哥银矿，当时这个词指的是挖矿的小炸药—矿工会把炸药用纸包上，塞入石头缝隙中，用于挖掘矿石。矿工们经常用玉米饼包裹辣酱馅料，在工作时食用。这种食物形似小炸药，因此也被称为“矿工玉米饼(miner's tacos)”。如今，taco指的是一种食物—用铁板烤制的薄薄的玉米饼，上面放上许多馅料，折叠起来，不用任何餐具就可以吃。taco上可以放任何东西，有点像中国的“大饼卷一切”。
There is a vlog about corn.
Let's listen to learn.
视频日志
1.Listen to the opening of the vlog and choose the main idea.
a It explains the importance of corn in Mexico.
b It compares corn in different countries.
c It describes a famous Mexican corn dish.

墨西哥的“玉米节”(Sweet Corn Festival) 是个盛大的节日，庆祝方式多种多样，包括烹饪比赛、街头巡游、音乐表演以及各种以玉米为主题的活动。节日期间，游客和当地居民可以欣赏到各种玉米制作的手工艺品, 品尝到各种用玉米制作的美食，如玉米糕、玉米饼，甚至是玉来冰激凌。
Jason is taking a vlog about the Sweet Corn Festival.
玉米在墨西哥农业和经济中占据重要地位, 深深地影响了墨西哥的文化和日常生活。“玉米节”不仅是对墨西哥农业的赞美，也是一个向全世界展示其独特文化和美食的盛会。
Phonetics in use
/e / play amazing
/a / size like
/ / toy boy
/e / make cake
great taste
/a / buy try
light high
/ / enjoy oil
coin joy
More practice
Phonetics in use
/e /
① 学习该音发音方法请先学习/e/和/ /这两个单元音。② 嘴巴张开成半圆形，开始发/e/音。 ③ 然后颚部慢慢抬起滑向/ /音，嘴唇慢慢合上。 注意：/e /是个"合口双元音"，即牙床由半开到接近半合，由大到小。 发音时音量从强到弱，前长后短，前重后轻。
make cake
great taste
amazing play
Phonetics in use
/a /
① 学习该音发音方法请先学习/ɑ /和/ /这两个单元音。② 双唇张开，开始发/ɑ /音。 ③ 舌部肌肉放松，然后颚部慢慢抬起滑向/ /音，嘴唇慢慢合上。 注意：/a /是个"开合双元音"，即牙床由半开到接近半合，口形由大到小。 发音时舌位由低到高，音量由强到弱，由长到短，由清晰到含糊。
buy try
light high
size like
Phonetics in use
/ /
① 学习该音发音方法请先学习/ /和/ /这两个单元音。 ② 发音时下颌张开，嘴唇略呈圆形，稍稍向外突出。 ③ 舌前部收缩，舌后部向软颚抬起，但不要接触到软颚。 ④ 舌身放松前探，舌尖轻触下齿，舌前部微微抬起。
enjoy oil
coin joy
toy boy
2.Listen again and complete Jason’s notes for the vlog.
40
9,000
cooking
600
food
Jason: Welcome to Amazing Plants. This is Jason. I'm at the Sweet Corn Festival in Mexico. Look at this ear of corn! Can you believe the size of it ! But it's not the biggest. The biggest one was nearly 40 centimeters long!
People started growing corn in Mexico about 9,000 years ago. Today, it's a big part of their cooking. There are over 600 corn dishes now!
Corn isn't just food. People use it in many ways. It's also part of Mexican culture. Let's go and see!
Tapescript
Listening for numbers：
When listening for numbers, pay attention to words and expressions like nearly, about, over, and more/ less than. They usually come before numbers.
Learning to learn
Look at the picture and answer the questions.
1. What are the parts of an ear of corn
Corn seed, corn silk and corn husk.
corn seed
corn silk
corn husk
Look at the picture and answer the questions.
corn seed
corn silk
corn husk
2. What are the parts used for
We can use corn seeds to make foods.
We can use corn silk to make tea.
We can use corn husks to make dolls.
3.Listen to the conversation and complete the sentences.
Corn seeds
Tacos are a traditional Mexican food. We them from corn seeds. We make chips with corn seeds, too.
Corn silk
It’s the “hair” of corn. people in many countries make with it. It is for your health.
corn husks
we make dolls with corn husks.
make
tea
good
traditional
Jason: Can I try the taco
Jose: Sure.
Jason: Yum! Are tacos a traditional Mexican food
Jose: They are! We make them from corn seeds.
Jason: Is this beef inside
Jose: Yeah. You can put almost anything in a taco! Now try these chips. I made them with corn seeds, too.
Jason: Oh, what's that
Jose: It's corn silk tea.
Jason: Corn silk
Jose: It's the "hair" of corn. People in many countries make tea with it. It's good for your health. Try it!
Jason: It's sweet. Oh, what are these
Silvia: They're traditional dolls. I made them with corn husks.
Jason: So colorful! May I take a video of them
Silvia: Certainly!
Jason: Corn has so many uses. This is amazing. There's a saying in Mexico: without corn, there is no country. Do you agree
How do people ask for and give permission
Asking for and giving permission：
Asking for permission helps us get something in a polite way. We can use the questions May I ... or Could / Can I ... People can reply Certainly, Sure or Go ahead.
Learning to learn
Can you give more examples
.How do you understand the saying “without corn,there is no country”？
Further thinking
How do you understand “Without corn,there is no country.”？
4.Work in pairs. Act out a conversation about the uses of a plant.
Rose Cotton Bamboo
Step 1
Choose one of the plants andthink about three ways of using it.
Step 2
Have a conversation about its uses. Try to ask for and give permissionin the conversation
bamboo
4.Work in pairs. Act out a conversation about the uses of a plant.
Example:
A: Could you tell me about bamboo
B: Of course. We use bamboo for food.
A: Yes, that’s true. I often eat bamboo shoots with noodles.
B: We also use bamboo as a building material. You can build houses with it.
A: That’s interesting! May I ask you for another use
B: Yes, no problem. You can make paper from bamboo.
A: Thank you! Bamboo is a very useful plant.
Language points
1. Compares corn in different countries.
compare...with... ：把......和......比较 （侧重比较两者的异同）
eg：Compare this car with that one, and you’ll find the differences.
把这辆车和那辆车比较一下，你就会发现不同之处。
compare...to... ：把......比作...... （侧重于指出两者的相似之处）
eg：People often compare a teacher to a candle. 人们常把老师比作蜡烛。
名词：comparison
2. Compares corn in different countries.
different是形容词，常见用法如下：
作定语：修饰名词
There are many different kinds of flowers in the garden.
花园里有许多不同种类的花。
常用短语：be different from 与……不同 be different in 在......方面不同
My coat is different from yours. 我的外套和你的不同。
These two books are different in style. 这两本书风格不同。
Exercise
一、单项选择
1. This book is different ________ that one.
A. to B. from C. of D. with
2. There are many ________ ways to solve this problem.
A. different B. differently C. difference D. differences
3. We often ________ children to flowers.
A. compare B. compared C. comparing D. are compared
B
C
A
二、完成句子
1. This book is different from that one.（同义句转换）
This book is not ________ ________ that one.
2. She compares the two cars carefully. （改为一般疑问句）
________ she ________ the two cars carefully
similar
to
Does
compare
Required
Optional
Homework
Finish the exercises in your book.
Work in pairs to finish the conversation tasks.
34
Thank you!

展开更多......

收起↑